in Pérez-Vargas, Hernández-Padrón, Pérez de Paz & Elix, Lichenologist 44, 1: 68 (2011) [2012].
Protolog: Fungus saxicolus. Thallus crustaceus, uniformis, adnatus, continuus vel rimoso-farinosus, albidus vel griseo-albidus, pruinosus. Algae ad genus Trebouxia pertinens. Apothecia immersa, fusca, pruinosa, orbicularia, usque ad 0.5 mm in diametro, disco urceolato, punctiformi. Hymenium 140-170 µm altum, hyalinum. Hypothecium 15-20 µm altum, brunneum. Paraphyses 1-1.5 µm crassae, simplices, laxae. Asci cylindrici 110-130 x 18-23 µm, 4-spori. Ascosporae ellipsoideae, brunneae, muriformes, septis transversalibus 3-5, longitudinalibus 2-3, 25-28 (-45) x 12-18 µm. Pycnidia non visa. Thallus acidum lecanorinum, decarboxylecanorinum et diploschistesicum continens.
Protolog type data: Spain, La Palma Island, La Caldera de Taburiente National Park, La Cumbrecita, UTM: 220810/ 317736, 1280 m alt., on rocks in Pinus canariensis C. Sm. ex DC. in Buch forest, April 2000, C. Hernández & P. L. Pérez 2770 (TFC Lich-holotypus; CANB-isotypus).
Type locality: Spain, Canary Islands, La Palma, La Caldera de Taburiente National Park, La Cumbrecita, UTM: 220810/ 317736, on rocks in forest of Pinus canariensis forest, 1280 m, April 2000, C. Hernández & P. L. Pérez 2770 (TFC-Lich - holotype; CANB - isotype).
Type locality coordinates: Data lacking.
Molecular barcode: Data lacking.
Thallus: saxicolous, crustose, continuous to rimose, whitish grey, moderately thin, up to 0.4 mm thick. Upper surface shiny, with bright whitish pruina giving it a farinose appearance. Medulla white, amyloid (I+ blue). Prothallus not visible. Vegetative propagules absent. Ascomata perithecioid, immersed. Disc urceolate, greyish pruinose, orbicular, 0.3-0.5 mm diam. Proper exciple dark brown, 60-90 µm thick. Hymenium hyaline, 140-170 µm high, not inspersed. Hypothecium yellowish brown, 15-20 µm thick. Paraphyses 1.5 µm thick, simple, apices not thickened. Asci cylindrical, 110-130 x 18-23 µm, predominantly 4-spored. Ascospores ellipsoid, brown, muriform, with 3-5 transverse and 2-3 longitudinal septa, 25-38 (-45) x 12-18 µm. Pycnidia unknown (Pérez-Vargas et al. 2012: 68).
Photobiont: Green alga. Photobiont trebouxioid with cells up to 12 µm diam. (Pérez-Vargas et al. 2012: 68).
Chemistry: K+ yellow, C+ and KC+ vivid red, PD-; containing diploschistesic acid, lecanoric acid and decarboxylecanoric acid (Pérez-Vargas et al. 2012: 68).
Ecology: On exposed siliceous rocks in Pinus canariensis forest, between 1100 and 1200 m.
Distribution Type: Known only from La Palma, Canary Islands.
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